forpresidentobamaonceagain today as momentum seems to be fading post-newtown. in colorado the president visited a police academy, congratulated lawmakers there for tightening gun rules there in the wake of the aurora movie theater shooting last year. that left 12 dead. in pushing for background checks the president told the audience there doesn't have to be a conflict between the safety of citizens and second amendment rights in this country. >>> there is politics in the news tonight. you may not be up on the special election under way for a congressional seat in south carolina. the two candidates have been decided. former governor mark sanford, the republican famous for running out on his wife for the woman who is now his fiancee. she showed up at his primary victory last night. he is running against stephen colbert's sister. elizabeth colbert bush who prefers the less fancy, less french-infused family name of colbert. it's a conservative district. she's fighting an uphill fight. the special election is may 7. >>> this very network, nbc is in the news tonight after the official word to